US5321547AExpiredUtility

Monocular telescope

58
Assignee: ZAPP WALTERPriority: Feb 19, 1990Filed: Aug 17, 1992Granted: Jun 14, 1994
Est. expiryFeb 19, 2010(expired)· nominal 20-yr term from priority
Inventors:Walter Zapp
G02B 23/16G02B 23/02
58
PatentIndex Score
21
Cited by
16
References
31
Claims

Abstract

A monocular telescope in which the beam path is so laid out that the casing may be flat in the direction of view, and the optical axis of the beam path in the casing describes a somewhat rectangular route, and in which the telescope has a view finder beam path intesecting with the telescope beam path in the users eye.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A monocular telescope with a view finder, wherein the telescope and the view finder have a common sighting direction, a mirror system is provided in the telescope beam path, the view finder comprises at least one view finder objective and a view finder eyepiece which have an optical axis, the telescope comprises at least one telescope objective and a telescope eyepiece with an eye lens, and the axes of the view finder eyepiece and of the telescope eyepiece intersect behind the eyepiece at the pivot point of an observer's eye. 
     
     
       2. A telescope according to claim 1, wherein the ocular lens of the telescope eyepiece and the view finder eyepiece are disposed directly one above the other. 
     
     
       3. A telescope according to claim 1, wherein the optical axis of the eye lens of the telescope eyepiece is aimed toward the eye upwardly at an angle. 
     
     
       4. A telescope according to claim 1, wherein the optical axis of the view finder extends in a straight line to the eye. 
     
     
       5. A telescope according to claim 1, wherein the telescope and the view finder are enclosed by a casing which has a substantially planar surface transverse to the viewing direction. 
     
     
       6. A telescope according to claim 5, wherein the view finder beam path passes substantially perpendicularly through the flat side of the casing. 
     
     
       7. A telescope according to claim 5, wherein the image beam path of the telescope is folded such that the image beam path has an optical axis which describes a substantially flat, approximately rectangular path in the casing. 
     
     
       8. A telescope according to claims 5, wherein the casing is approximately rectangular, and the longer side of the rectangle points downward when the telescope is in use. 
     
     
       9. A telescope according to claims 5, wherein the front lens of the telescope objective and the front lens of the view finder objective are provided on the front of the casing and the eye lens of the telescope eyepiece and the view finder eyepiece are provided on the back of the casing. 
     
     
       10. A telescope according to claim 1, wherein the front lens of the telescope objective is disposed in the upper part of the casing, and the eye lens of the telescope eyepiece is also disposed in the upper part of the casing on the rear side thereof, and that both said front lens and said eye lens are arranged offset from the center of the casing. 
     
     
       11. A telescope according to claim 1, wherein the telescope objective consists of two lens units separated from one another, between which a first planar mirror of an inverting system is provided, such that said first planar mirror turns the imaging beam path into the lower part of the casing. 
     
     
       12. A telescope according to claim 11, wherein said first planar mirror is disposed between the lens units at an angle that is a slight departure from 45° to the axis of entry of light rays. 
     
     
       13. A telescope according to claim 11, wherein said first planar mirror turns the beam path downward at a slight inclination with respect to a longitudinal axis through the telescope. 
     
     
       14. A telescope according to claim 11, wherein a pair of mirrors are provided in the lower part of the casing which turn the beam path into the upper part of the casing toward the telescope eyepiece. 
     
     
       15. A telescope according to claim 14, wherein said pair of mirrors are arranged for displacement together in the direction of the entering light rays in order to focus the telescope. 
     
     
       16. A telescope according to claim 1, wherein said telescope eyepiece consists of two lens units between which a planar mirror is provided. 
     
     
       17. A telescope according to claim 1, wherein said telescope objective and said telescope eyepiece are both chromatically corrected. 
     
     
       18. A telescope according to claim 17, wherein said objective is constructed in divided form as an achromatic lens. 
     
     
       19. A telescope according to claim 17, wherein a field lens of the telescope eyepiece is chromatically corrected. 
     
     
       20. A telescope according to claim 1, wherein the imaging beam path of the view finder is directed through a partially transparent mirror, and a circle of light is reflected by said partially transparent mirror into the view finder image. 
     
     
       21. A telescope according to claims 1, wherein in addition to the view finder objective and the telescope objective in the casing, an illumination opening is provided for a light marker which appears in the image field of the view finder. 
     
     
       22. A telescope according to claim 21, wherein said light marker is a luminous circle. 
     
     
       23. A telescope according to claim 21, wherein the view finder marker is illuminated through a beam path entering at an angle from above. 
     
     
       24. A telescope according to claim 14, wherein a knob for displacing said two mirrors is provided in an upper corner of the casing. 
     
     
       25. A telescope according to claims 5, wherein a knob is provided in an upper corner of said casing, which knob is offset rearward or forward from the casing and operates at least one cover which serves to cover the front lens of the telescope objective or of the view finder objective. 
     
     
       26. A telescope according to claim 25, wherein said cover also covers an illumination opening for a view finder marker. 
     
     
       27. A telescope according to claim 25, comprising an articulated lever mechanism operatively connected to said knob for moving a cover between a first position in which the eye lens of the telescope eyepiece and the view finder eyepiece are covered and a second position in which the eye lens of the telescope eyepiece and the view finder eyepiece are exposed. 
     
     
       28. A telescope according to claim 1, wherein the lenses of the telescope and of the view finder have a rectangular external shape. 
     
     
       29. A telescope according to claim 1, wherein a distance scale is provided which can be viewed adjacent the image field of the telescope. 
     
     
       30. A telescope according to claim 29, wherein a prism member is provided for reflecting the distance scale into the viewing beam path. 
     
     
       31. A telescope according to claim 30, wherein said prism member is a prismatic edge segment on a lens of the telescope.

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